From: Stephen Hemminger <stephen@networkplumber.org>
To: Kaiwen Deng <kaiwenx.deng@intel.com>
Cc: dev@dpdk.org, stable@dpdk.org, qiming.yang@intel.com,
yidingx.zhou@intel.com, Aman Singh <aman.deep.singh@intel.com>,
Yuying Zhang <yuying.zhang@intel.com>,
Ferruh Yigit <ferruh.yigit@amd.com>,
David Marchand <david.marchand@redhat.com>
Subject: Re: [PATCH v2] app/testpmd: use Tx preparation in txonly engine
Date: Thu, 11 Jan 2024 08:57:06 -0800 [thread overview]
Message-ID: <20240111085706.72fef7d0@hermes.local> (raw)
In-Reply-To: <20240111052555.35930-1-kaiwenx.deng@intel.com>
On Thu, 11 Jan 2024 13:25:55 +0800
Kaiwen Deng <kaiwenx.deng@intel.com> wrote:
> Txonly forwarding engine does not call the Tx preparation API
> before transmitting packets. This may cause some problems.
>
> TSO breaks when MSS spans more than 8 data fragments. Those
> packets will be dropped by Tx preparation API, but it will cause
> MDD event if txonly forwarding engine does not call the Tx preparation
> API before transmitting packets.
>
> We can reproduce this issue by these steps list blow on ICE and I40e.
>
> ./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -c 0xf -n 4 -- -i
> --tx-offloads=0x00008000
>
> testpmd>set txpkts 64,128,256,512,64,128,256,512,512
> testpmd>set burst 1
> testpmd>start tx_first 1
>
> This commit will use Tx preparation API in txonly forwarding engine.
>
> Fixes: 655131ccf727 ("app/testpmd: factorize fwd engines Tx")
> Cc: stable@dpdk.org
>
> Signed-off-by: Kaiwen Deng <kaiwenx.deng@intel.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
next prev parent reply other threads:[~2024-01-11 16:57 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-03 1:29 [PATCH v1] app/testpmd: use Tx preparation in txonly engine Kaiwen Deng
2024-01-04 1:03 ` Stephen Hemminger
2024-01-04 5:52 ` Jerin Jacob
2024-01-11 5:25 ` [PATCH v2] " Kaiwen Deng
2024-01-11 6:34 ` lihuisong (C)
2024-01-11 16:57 ` Stephen Hemminger [this message]
2024-01-12 16:00 ` David Marchand
2024-02-08 0:07 ` Ferruh Yigit
2024-02-08 10:50 ` Konstantin Ananyev
2024-02-08 11:35 ` Ferruh Yigit
2024-02-08 15:14 ` Konstantin Ananyev
2024-02-08 11:52 ` Morten Brørup
2024-02-11 15:04 ` Konstantin Ananyev
2024-02-13 10:27 ` Morten Brørup
2024-02-22 18:28 ` Konstantin Ananyev
2024-02-23 8:36 ` Andrew Rybchenko
2024-02-26 13:26 ` Konstantin Ananyev
2024-02-26 13:56 ` Morten Brørup
2024-02-27 10:41 ` Konstantin Ananyev
2024-02-08 12:09 ` Jerin Jacob
2024-02-09 19:18 ` Ferruh Yigit
2024-12-03 18:35 ` [PATCH v1] " Stephen Hemminger
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